Everyone knows the great Hanna-Barbera cartoon characters: Scooby Doo, The Flintstones, and Yogi Bear, just to name a few. But there's one Hanna-Barbera character that '90s kids especially love: Johnny Quest.Johnny Quest was an animated cartoon that aired in the late '60s and early '70s. The cartoon followed the adventures of young Johnny Quest, who was always accompanied by his faithful dog, Bandit. Johnny Quest was an instant hit with kids, and quickly became a Saturday morning staple. In 1986, a new version of Johnny Quest was released, and again, kids loved it. Johnny Quest is still beloved by '90s kids and continues to be a pop culture icon.